Spinal fusion device



FIG. 1 is a top perspective view of the spinal fusion device according to our design;

FIG. 2 is a bottom perspective view thereof;

FIG. 3 is a front view thereof;

FIG. 4 is a right side view thereof;

FIG. 5 is a bottom view thereof;

FIG. 6 is a left-side view thereof;

FIG. 7 is a rear view thereof; and,

FIG. 8 is a top view thereof. 

CLAIM The ornamental design for a spinal fusion device, as shown and described. 